CementRaw Mill
Raw mill grinding table / table segment (vertical roller mill – VRM)
VRM table: segments (typically 3–4 per mill). Weight per segment: 500–3000 kg. Profile accuracy (taper angle) critical for correct roller nip. OEM (FLSmidth ATOX, Polysius, Loesche, Pfeiffer) drawing controlled. Bolt hole pattern per OEM.
Specifications
Material
Ni-hard white iron Ni4Cr2 (Ni-Hard IV) / 27%Cr Hi-Chrome white iron; Martensitic Cr15MoNi
Grades
Ni-hard;Ni-Hard IV
Material Class
White IronHi-ChromeNi-Hard
OEM References
FLSmidthATOXPolysiusLoeschePfeiffer
Common Processes
Sand casting (large table segments, typically resin / furan no-bake); heat treat (Ni-hard: stress relieve 250°C; Hi-Cr: destabilise 940°C + temper)
NDT & Inspection
Chemical analysis; hardness (Ni-Hard: 550–650 HBN; Hi-Cr: 620–680 HBN); microstructure (eutectic carbide distribution); dimensional (taper face, bolt hole pattern); VT
Typical Specs & Notes
VRM table: segments (typically 3–4 per mill). Weight per segment: 500–3000 kg. Profile accuracy (taper angle) critical for correct roller nip. OEM (FLSmidth ATOX, Polysius, Loesche, Pfeiffer) drawing controlled. Bolt hole pattern per OEM.
⚠ Caveats
Profile accuracy (taper angle) critical for correct roller nip.